The Brewers announced they've signed first baseman Travis Ishikawa to a minor league deal, and also confirmed their signing of Mike Rivera. Ishikawa was designated for assignment by the Giants in March, and after clearing waivers went on to hit .251/.368/.383 in 211 Triple-A plate appearances. Ishikawa injured his non-throwing shoulder in June while playing right field and had surgery that month. His agent Jim McDowell tells MLBTR Ishikawa was cleared for baseball activities two months ago and will be at full strength for 2012.